The name is absent

24

ordered in order to ensure that the flanges capping the ends did not heat up during
synthesis.

Figure 2.6 - Continuous pump, xylene∕ferrocene mixture, and mass flow
controllers for vapor-phase CVD.

As the carbon∕catalyst precursors are not gaseous for this method, they need
to be introduced to the system in the liquid state, which necessitates a more
complicated delivery system. Previous methods of liquid delivery include injection
[40], spray [41], and aerosol [42], though these methods all necessitate either a
secondary heater or other hardware to prepare the mixture for introduction to the
reaction zone. For this work, the catalyst∕carbon source mixture used was
ferrocene dissolved in xylene, and with xylene's boiling point being 139 ^oC, the
mixture must be heated up to this temperature before it can mix with the buffer
gases to pass through the reaction zone.

<<   30   31   32   33   34   35   36   >>

More intriguing information